clang/test/CXX/temp/temp.decls/temp.variadic/p2.cpp

   1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
   2
   3 template<class ... Types> void f(Types ... args);
   4
   5 void test() {
   6   f();
   7   f(1);
   8   f(2, 1.0);
   9 }
  10
  11 // Test simple recursive variadic function template
  12 template<typename Head, typename ...Tail>
  13 void recurse_until_fail(const Head &, const Tail &...tail) { // expected-note{{candidate function template not viable: requires at least 1 argument, but 0 were provided}}
  14   recurse_until_fail(tail...); // expected-error{{no matching function for call to 'recurse_until_fail'}} \
  15   // expected-note{{in instantiation of function template specialization 'recurse_until_fail<char[7]>' requested here}} \
  16   // expected-note{{in instantiation of function template specialization 'recurse_until_fail<double, char[7]>' requested here}}
  17 }
  18
  19 void test_recurse_until_fail() {
  20   recurse_until_fail(1, 3.14159, "string");   // expected-note{{in instantiation of function template specialization 'recurse_until_fail<int, double, char[7]>' requested here}}
  21
  22 }